commpy.channelcoding.turbo_encode

turbo_encode(msg_bits, trellis1, trellis2, interleaver)

Turbo Encoder.

Encode Bits using a parallel concatenated rate-1/3 turbo code consisting of two rate-1/2 systematic convolutional component codes.

Parameters :

msg_bits : 1D ndarray containing {0, 1}

Stream of bits to be turbo encoded.

trellis1 : Trellis object

Trellis representation of the first code in the parallel concatenation.

trellis2 : Trellis object

Trellis representation of the second code in the parallel concatenation.

interleaver : Interleaver object

Interleaver used in the turbo code.

Returns :

[sys_stream, non_sys_stream1, non_sys_stream2] : list of 1D ndarrays

Encoded bit streams corresponding to the systematic output

and the two non-systematic outputs from the two component codes.